4,378
edits
Debye length: Difference between revisions
no edit summary
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
A plasma consisting of freely moving positively and negatively charged particles has a natural tendency to shield net charges (or cancel DC electric fields). | A plasma consisting of freely moving positively and negatively charged particles has a natural tendency to shield net charges (or cancel DC electric fields). | ||
The effective shielding length is the Debye length, and can be derived from a simple two fluid model of the plasma. | The effective shielding length is the Debye length, and can be derived from a simple two fluid model of the plasma. | ||
<ref>J.P. Freidberg, ''Plasma physics and fusion energy'', Cambridge University Press (2007) ISBN 0521851076</ref> | <ref>J.P. Freidberg, ''Plasma physics and fusion energy'', Cambridge University Press (2007) {{ISBN|0521851076}}</ref> | ||
<ref>K. Miyamoto, ''Plasma Physics and Controlled Nuclear Fusion'', Springer-Verlag (2005) ISBN 3540242171</ref> | <ref>K. Miyamoto, ''Plasma Physics and Controlled Nuclear Fusion'', Springer-Verlag (2005) {{ISBN|3540242171}}</ref> | ||
:<math>\lambda_D = \left ( \frac{\varepsilon_0 T_e}{e^2 n_0}\right )^{1/2}</math> | :<math>\lambda_D = \left ( \frac{\varepsilon_0 T_e}{e^2 n_0}\right )^{1/2}</math> | ||